The Power of Charlieplexing: Efficiently Interfacing 72 Buttons with Just 9 Arduino Pins
Charlieplexing is a smart technique to control multiple devices with fewer pins. Using just 9 Arduino pins, I interfaced 72 buttons, leveraging the formula n(n-1). This method optimizes pin usage by creating unique high-low states, making it perfect for compact and efficient electronics and IoT projects. 🚀✨